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Mostrando ítems 1-10 de 35
Artículo
Pure diffusional creep of NiO polycrystals
(European Physical Society (EPS), 1983)
Compressive creep testing of polycrystalline NiO has been performed in air and argon, at temperatures between 1 100 and 1 500 °C (0.61 to 0.79 TM) under loads corresponding to initial applied stresses from 6 to 90 MPa. ...
Artículo
Estructura de dislocaciones en ZRO2 totalmente estabilizado deformado a alta temperatura
(1989)
Se ha estudiado por microscopía electrónica de transmisión la microestructura de deformación a altas temperaturas (1.300-1.550°C) de monocristales de Zr02-Y203 totalmente estabilizados. La variación observada en la ...
Artículo
Multiple steady states on an adsorbent surface
(American Institute of Physics Publising LLC, 1986)
The occurrence of multiple steady states in a system formed by monomers adsorbed on a lattice, with attractive interaction between nearest adatoms, is demonstrated. This fact causes hysteresis in the adsorption-desorption ...
Artículo
X-ray Structure and Molecular-Packing Analysis of a Glucofuranosoimidazolidine- 2-thione
(International Union of Crystallography, 1986)
1-(4-Bromophenyl)-3-ethyl-(3,5,6-tri-Oacetyl- 1,2-dideoxy-~t-L-glucofuranoso)[2,1-d]imidazolidine- 2-thione,* C21H25BrN2OTS, M,= 529.40, orthorhombic, P2~2121, a= 12.056 (7), b= 22.420 (9), c =8.841 (2)A, V=2390(2) A3, ...
Artículo
Plastic deformation of CoO single crystals
(EDP Sciences, 1980)
Constant strain rate compressions along < 001 > have been performed on CoO single crystals (ε ∼ 6 x 10-5 s-1). Yield stresses and work hardening rates have been measured between 77 K and 1 400 K; CoO is very strong when ...
Artículo
X-ray Structure of a (o-ga/acto-Pentaacetoxypentyl)pyrazoline
(International Union of Crystallography, 1989)
1-(3,5-Dimethyl-3-nitro-1-pyrazolin-4-yl) penta-0-acetyl-o-galacto-pentitol, e20H29N 3012, Mr= 503·5, orthorhombic, P21212¡, a= 14·471 (9), b = 14·518 (3), e= 12·028 (2) A, V= 2527·0 (1·7) A3, z = 4, Dx = 1·323 ...
Artículo
Structure of 4-(~-D-Erythrofuranosyl)-3-methyl- l-(p-tolyl)-4-imidazoline-2-thione Monohydrate, C 15H18N203S.H20
(International Union of Crystallography, 1983)
Mr=324.4, orthorhombic, P212t2 ~, a= 32.150(5), b=10.215(1), c=4.805(1)A, V= 1578.0 (4)/~3, Z = 4, D x = 1.36 Mg m -a, 2(Cu Ka) = 1.5418A, #=1.953mm -1, T=300K, final R= 0.050 for 1361 observed [I>2tr(I)] independent ...
Artículo
Lattice-Dynamical Calculation of Second-Order Thermal Diffuse Scattering in Molecular Crystals
(International Union of Crystallography, 1985)
A computer procedure has been developed to calculate second-order thermal diffuse scattering (TDS) intensity for molecular crystals from latticedynamical calculations with an atom-atom potential in the Born-von K~irmfin ...
Artículo
Molecular-Packing Analysis of Some Glucofuranoimidazolidine Crystals
(International Union of Crystallography, 1987)
Lattice-energy minimization for seven glucofuranoimidazolidine crystals was carried out in the atom-atom approach using an (exp-6-1) form for atom-pair interactions. Molecular rotation and translation and also internal ...
Artículo
Structure of 1-Methyl-5-(D-ga/acto-1 ,2,3,4,5-pentaacetoxypentyl)- 3-phenylpyrazole
(International Union of Crystallography, 1989)
C25H30N2010, Mr = 518·5, orthorhombic, P2 1212¡, a= 12·303 (2), b =:= 25·071 (4), e=pentyl chain range from 45 to 80°. The crystal cohesion is mainly dueto van der Waa1s interactions 8·823 (5) A, V= 2721·4 (16) ...